---
description: Disallows the declaration of impure pipes.
options: null
optionsDescription: Not configurable.
rationale: Impure pipes should be avoided because they are invoked on each change-detection cycle.
ruleName: no-pipe-impure
type: functionality
typescriptOnly: true
layout: rule
title: 'Rule: no-pipe-impure'
optionsJSON: 'null'
---